Turn-table.



No. 679,l79.

Patented my 23, |901. A. E. MARZULF.

Tumi TABLE. (Anulication filed Sept. 17, 1900.)

2 Sheets-Sheet l.

(No Model.)

IllillllluM/f YH: Norms Psfzns co. Pnorcvuwo.. wnsummon. uA c.

Patented July 23, |90I. A. E. MARZOLF.

TURN TABLE.

(Application tiled Sept. 17, 1900.)4

(No Model.)

2 Sheets-Sheet 2,

Nrrnn rares trims.,

ALFRED E. MARZOLF, OF CHICAGO, ILLINOIS.

SPECIFICATION forming part of Letters Patent N o. 679,179, dated 311157 23, 1901 Application led September 17, 1900. Serial No. 30,224. (No model.)

To @ZZ whom, t may concern.-

Beit known that I, ALFRED E. MARZOLF, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Turn-Tables; and Ido hereby declare that the following is a full, clear, and eXact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in turn-tables for railroads or the like, and more particularly to that class of turn-tables in which the mechanism of a'locomotive-engine supported thereon may be utilized to turn the table to any desired position.

The invention consists in the matters hereinafter described, and more fully pointed out and defined in the appended claims.

In the drawings, Figure l is a side elevation of a device embodying my invention. Fig. 2 is a top plan view of the same. Fig. 3 is a central transverse section. Fig. 4 is a horizontal section of the mechanism for locking the rollers. Fig. 5 is a side elevation of the same. Fig. 6 is an enlarged section of the central pivot-bearing.

As shown in said drawings, A indicates a pedestal located centrally beneath the turntable and adapted to afford a pivotal support therefor. l B B indicate the sills of the turn-table, eX- tending longitudinally thereof and provided at the ends with the trucks b b, adapted to run on the circle-track C, extending circumferentially around the pit in a familiar manner. Said turn-table is supported centrally on the pedestal by means, as shown, of a ball-bean ing comprising a vertical pivot A', axially secured on the pedestal, and an inverted cup A2, which incloses said pivot on the top and sides and is supported at its lower end upon a plurality of bearing-balls which are interposed between the same and the top of the pedestal and for which a ball-race is provided in the pedestal and cup. From said cup braces d d extend to the sills B B on each side and serve to hold said sills in unvarying relation to said cup. The sills are also rigidly connected together in the usual or any desired manner and are provided at the top with cross-ties b b', upon which are secured track-rails extending toward the ceuter from each end of the turn-table. At the central part of the turn-table said track-rails are omitted, and in lieu thereof a plurality of parallel rollers B' B' of relatively small diameter (indicated in Fig. 2) are provided, which are designed to take the place of the rails in the central part of the turn-table and to be engaged by and support the drivingwheels of the locomotive in turning the table. Said rollers B' B may be of uniform diameter from end to end and provided at each end with a groove designed to receive the trackwheel flange. As shown, however, the same are provided on the ends, in alinement with the rails, with wheels or trucks b2 of greater diameter than the central part of the roller, as indicated in Figs. 2 and 3, which support the driving-wheels when the engine is supported on the turn-table in position to be turned.

The pedestal A is provided at its top with a fixed gear d. Supported in brackets D D on the sills are vertical shafts D2 D3, each pro-V vided at its lower end with a gear adapted to engage the gear et' and provided at its upper end with a bevel-gear d, adapted to engage the bevel-gear b3 b3 on the central rollers B' B'. Said gears are so arranged, as shown in Fig. 2, that rotation of the rollers by the drivers of a locomotive acts to cause rotation of the vertical shafts, and thereby the swinging of the table.

` E E indicate bars for locking the rollers from rotation while running a locomotive on or od the turn-table. Said bars are located one on each side of the turn-table and are provided with a plurality of longitudinal slots adapted to fit over the reduced extended axes of the rollers. On the inner side of said bars are provided a plurality of pins eadjacent to one end of each `slot and adapted to engage notches in the trucks b2 b2 adjacent thereto, which are provided in the end of the same for that purpose. Said notches are so proportioned and said teeth are so adjusted that when said bars E E are moved in` one direction to the limit of their movement said pins e are out of engagement with said rollers and said rollers are free to rotate. When, however, the bars are moved in the other direc IOO l effectually lock the same from rotation.

tion to the limitof their movement, said pins e engage in said notches in said rollers and Ilevers F F are provided one at each end of each bar E and affording means whereby the engineer or fireman located in the cab of the locomotive may shift said bars either to their locking or unlocked positions. Obviously said rollers may be journaled in any desired manner on the sills B B.

The operation of my device is as follows: Said turn-table being adjusted with the rollers locked by means of the bars E E, a,locomotive may be moved thereon. Said rollers being of small size, material jolt or jar to the locomotive running over the same is avoided.

. When in position on the table to be turned,

the drive-wheels of the locomotive are supported von and engage the rollers. The bars E E are now moved backwardly until the pins thereon are out of engagement with the rollers, leaving said rollers free to turn. If steam is now given the locomotive, the rotation of the drivers causes rotation of said rollers and one or more of the vertical shafts, the gear on the lower end of which acts against the fixed or non-rotative gear a, with the effectof causing the turning of the turn-table. Obviously the locomotive being at all times under the control of the engineer he may adjust the turn-table with respect to the desired i track with very little difficulty. The turntable being free to move in either direction, the speed and extent of its rotation will be entirely dependent upon the rotation of the drivers. Having once adjusted the table to the desired track, the levers F are shifted to throw the teeth e on the bars E E into engagement' with the rollers, thereby locking the same from rotation. The locomotive may then be run off the' turn-table in the usual manner. struction may be modified without departing from the principle of my invention.

' I claim as my inventionl. In a turn-table the combination with' the sills, of track-rails secured on each end of the same, a plurality of transverse rollers located centrally of the turn-table and adapted to engage the driving-wheels of a locomotive when balanced thereon, operative connection between said rollers and a part rigidly secured to the foundation whereby said turn-table may be operated by the drive-wheels of the locomotive and means operated from the cab of the locomotive for locking said rollers from rotation.

2. In a turn-table a plurality of parallel i' transverse rollers located centrally and adapted to engage the driving-wheels of alocomotive when balanced -on said turn-table, one end of each roller being provided with radial y, notches and a movable locking-bar provided with teeth or projections and adapted at one limit of its movement to engagein said notches 5 Obviously many features of. conof the rollers thereby locking the same from rotation.

3. In a device of the class described the combination with a fixed pedestal and sills pivoted thereon of transverse rollers j ournaled intermediate of the ends on said sills and adapted to support the driving-wheels of a locomotive when balanced on the pedestal, a movable bar parallel with each sill and in alinement with the ends of the rollers and means whereby shifting of said bars in one direction serves to lock the rollers from rotation and shifting of said bars in the opposite direction permits free rotation of the rollers.

4. In a turn-table the combination with a fixed pedestaland parallel sills pivoted thereon, of a plurality of transverse rollers journaled intermediate of the ends of said sills the tops of the same being in alinement with the top surface of the track-rails at the ends yof the turn-table, means adapted to be operated from a locomotive-cab when balanced on said turn-table for locking said rollers from rotation and vertical shafts secured cen- Y trally of the turn-table between the sills and provided at the upper end with beveled gears ladapted to intermesh with like gears on said rollers, the lower ends of said shafts being {provided with gears adapted to intermesh with a fixed gear on said pedestal.

, 5. In a device of the class described the `combination with a plurality of transverse rollers j'ournaled close together on the sills of lla turn-table of a locking mechanism for said {rollers comprising a bar slidably supported fon each sill in alinement with the ends of the :rollers and com plemental parts on said roller ends and said bars adapted to interlock when the bars are moved in one direction and to be tout of engagement when thebars are moved in the other direction.

6. In a device of the class described the combination with a plurality of transverse rollers journaled close together on the sills lof a turn-table of a locking mechanism for said rollers comprising a bar'slidably supported on each sill in alinement with the ends tof the rollers, said bars being slotted to receive the reduced ends of the axis of the rollers, a pin at one end of each slot and comv"plemental notches in the end of each roller adapted to receive said pins in locking enlgagement when the bars are in o ne of their adjusted positions and means for moving iboth bars into or out ofy locking engagement g adapted to be operated from a locomotive-cab by a lever.

' In witness whereof I have hereunto sublscribed my name in the presence of two subscribing witnesses.

i ALFRED E. MARZOLF.

In presence of- C. W. I-IILLs,

Louis J. DELsoN.

ICO

IIO 

